window.onload = function () {
    var go = document.getElementById('go'),
            box = document.getElementById('box');

    eventUtil.addHandler(box, 'click', function () {
        alert('我是整个父盒子');
    });

    eventUtil.addHandler(go, 'click', function (e) {
        //e=eventUtil.getEvent(e);
        e = e || window.event;
        alert(eventUtil.getElement(e).nodeName);
        eventUtil.preventDefault(e);
        eventUtil.stopPropagation(e);
    });

}